Hello. I'm quite puzzled why this stuck door didn't provoke a grunt to get me. I've seen many videos in this particular room and this stuck door does get broken through by a grunt. Is there a script issue here? Here are some pictures to illustrate:

Firstly, I have two orbs that still remain to be taken. The far blue orb is in the East Wing since I saw a blue aura coming beneath a bookshelf.

I go to the archives

The stuck door that doesn't trigger a monster

finally, here's a moment in this video where this player is surprised by the grunt in this stuck door: